A battery (10) integrally formed in a substrate (2) comprises a first current collector (4) inlaid in the substrate (2) and further coupled to a first electrode (14), a second current collector (6) coupled to a second electrode (16), and a solid state electrolyte (8) between the first electrode (14) and the second electrode (16).

Patent
   5180645
Priority
Mar 01 1991
Filed
Mar 01 1991
Issued
Jan 19 1993
Expiry
Mar 01 2011
Assg.orig
Entity
Large
100
4
all paid
1. A battery integrally formed in a substrate, comprising:
a first current collector embedded in said substrate and further coupled to a first electrode;
a second current collector coupled to a second electrode; and
a solid state electrolyte between said first electrode and said second electrode.
17. A radio having a battery integrally formed in a member within the radio, comprising:
a first current collector inlaid in said member and further coupled to a first electrode;
a second current collector coupled to a second electrode;
a solid state electrolyte between said first electrode and said second electrode.
9. A laminar battery forming an integral part of a portable electronic product, comprising:
a member of said portable product for receiving said laminar battery;
a group of solid state cells electrically coupled together, each cell comprising an anode, a cathode, and a solid electrolyte between said anode and cathode, said cathode comprising of a first current collector and a positive electrochemically active material, said anode comprising of a second current collector and a negative electrochemically active material, one of said cells being embedded in said member;
insulation means for insulating one cell within said group from another cell within said group; and
intercell connection means for electrically coupling said cells.
2. The battery of claim 1, wherein said substrate comprises a flexible circuit carrying substrate.
3. The battery of claim 1, wherein said substrate comprises a portion of a housing.
4. The battery of claim 1, wherein said first current collector is selected from the group consisting of expanded metal, metal screens, and metal foils, wherein the metal foil is selected from the group consisting of nickel, copper, aluminum, chromium, and combinations thereof.
5. The battery of claim 1, wherein said second current collector material is selected from the group consisting of expanded metal, metal screens, and metal foils, wherein the metal foil is selected from the group consisting of nickel, copper, aluminum, chromium, and any combinations thereof.
6. The battery of claim 1, wherein said first electrode material is selected from the group consisting of lithium and lithium alloys, lithiated carbon (lithium ion) compounds, and doped lithium polymers, wherein the doped lithium polymer is selected from the group consisting of polyphenylene, polypyrrole, and polyaniline and their derivatives.
7. The battery of claim 1, wherein said second electrode material is selected from the group consisting of metal chalcogenides, wherein the metal chalcogenide is selected from the group consisting of titanium disulfide, vanadium oxides, doped lithium polymers, and redox polymers.
8. The battery of claim 1, wherein said solid state electrolyte is selected from the group consisting of conductive polymer materials, wherein the conductive polymer material is selected from the group consisting of polyethyleneoxide (PEO), polyphosphazene, polyether-substituted phosphazene (MEEP), and polypropyleneoxide.
10. The battery of claim 9, wherein said member is selected from the group consisting of flex circuits, ceramic substrates, housings, and molded printed circuit boards.
11. The battery of claim 9, wherein said first current collector material is selected from the group consisting of expanded metal, metal screens, and metal foils, wherein the metal foil is selected from the group consisting of nickel, copper, aluminum, and any combinations thereof.
12. The battery of claim 9, wherein said second current collector material is selected from the group consisting of expanded metal, metal screens, and metal foils, wherein said foil is selected from the group consisting of nickel, copper, aluminum, and any combinations thereof.
13. The battery of claim 9, wherein said positive electrochemically active material is selected from the group of anode materials consisting of lithium and lithium alloys, lithiated carbon (lithium ion) compounds, and doped lithium polymers, wherein the doped lithium polymer is selected from the group consisting of polyphenylene, polypyrrole, and polyaniline and their derivatives.
14. The battery of claim 9, wherein said negative electrochemically active material is selected from the group of cathode materials consisting of metal chalcogenides, wherein the metal chalcogenide is selected from the group consisting of titanium disulfide, vanadium oxides, doped lithium polymers, and redox polymers.
15. The battery of claim 9, wherein said solid state electrolyte is selected from the group consisting of conductive polymer materials, wherein the conductive polymer material is selected from the group consisting of polyethyleneoxide (PEO), polyphosphazene, polyether-substituted phosphazene (MEEP), and polypropyleneoxide.
16. The laminar battery of claim 9, wherein said portable electronic product comprises a radio.
18. The radio of claim 17, wherein said member comprises a substrate within said radio.
19. The radio of claim 17, wherein said member comprises the housing of the radio.

This invention relates generally to batteries, and more specifically to a solid state battery inlaid in a product housing or substrate.

Power supplies in numerous portable products typically take up a substantial portion of the weight and volume of the portable product as a whole. The trend towards less voluminous and lighter power supplies is ever so evident in the communications industry. Thus, any further development that would decrease the overall weight and size of the power supply while maintaining (or increasing) the same charge capacity and life span of present packaged cell batteries would provide a distinct advantage. Typical batteries, such as nickel cadmium batteries, have at least one Ni-Cd cell. Each cell requires a metal casing enclosing a positive and a negative electrode, electrolyte, metal current collectors, and insulators. The term battery is occasionally used to identify a cell. However, it is more correctly used to identify a group of individual cells assembled in a pack with terminals (for electrical contact) and proper insulation such as a plastic housing for the battery pack containment. All this packaging results in an inefficient use of energy per unit volume of power source.

Today, in order to achieve the appropriate voltage and/or capacity requirements for portable products such as two-way radios and cellular phones, a string of individual cells (each usually contained in a metal can) is coupled serially or in parallel. The main reason for containment in the cell metal casing is the use of liquid electrolyte. This eliminates the risk of contamination of the portable product equipment from electrolyte leakage. Each cell's metal can is insulated in thin plastic heat shrink wrap to prevent shorting on contact with each other before insertion into the plastic housing. Each cell is then coupled typically using nickel or plated tabs, and then finally the cell pack is held within a hard plastic housing.

With the advent of solid electrolyte and solid conductive polymer materials, a new foundation for battery technology was laid. Conductive polymer materials are semiconductors in their natural state, but they can become conductive when doped (treated) with electron donor materials, i.e., alkali metals, or with electron acceptor materials, i.e., I2, AsF5, SO3, HSO3 F. These conductive polymers or plastics have a ring structure with delocalized π bonding electrons which are relatively free to move about the polymer chain structure. Conductive polymers such as polyphenylene, polypyrrole, and polyaniline have been used as electrode materials. Polyaniline and its derivatives, in particular, have become of greater interest because of their higher stability in air and their ease of reproducibility. Some of these polymers can be made into thin flexible films which can be shaped or molded into convenient shapes for design compatibility. In addition to the conductive polymer electrodes, polymer electrolytes have been developed which can also be fabricated in thin plastic sheets. Some examples include polyethyleneoxide (PEO), polyphosphazene, polyether-substituted phosphazene (MEEP), and polypropyleneoxide. A list of conductive polymers under development can be found in Material Engineering journal, August 1985 issue, page 35, Table 1.

These solid state batteries have the one drawback of low conductivity at normal or ambient operating temperatures. This limits the current rate capability that can be obtained from the system. However, conductivities in the order of 10-4 /Ω-cm at room temperatures have been attained in laboratories, which are sufficient for some battery applications such as computer memory back-up and memory cards. Solid polymers made into thin films can provide higher rate capabilities by increasing surface area significantly. Therefore, voltages and capacities are obtained which widen the range of applications for thin film solid state batteries. In addition to the solid state batteries mentioned, some type of supercapacitors can also be used as power sources. Recently, a paper presented by Dr. S. D. Bhakta of the Materials Research Laboratory of SRI International at the Electrochemical Society Meeting in Seattle, Wash., on Oct. 14-19, 1990 disclosed the use of polymeric materials in supercapacitors which could actually function as batteries. Therefore, the use of these emerging technologies to provide an integrated battery built into or as part of an equipment housing would result in smaller overall size, lighter overall weight, and lower fabrication cost of the portable equipment.

Accordingly, a battery integrally formed in a substrate, comprises a first current collector embedded in the substrate and further coupled to a first electrode, a second current collector coupled to a second electrode and a solid state electrolyte between the first electrode and the second electrode.

FIG. 1 is a cross-sectional view of an integral solid state inlaid battery in accordance with the present invention.

FIG. 2 is a perspective view of the battery of FIG. 1.

FIG. 3 is simple perspective view of a radio for use in accordance with the present invention.

FIG. 4 is a cross-sectional view of a group of solid state cells in accordance with the present invention.

Referring to FIG. 1, there is shown a battery 10 having a positive end terminal or current collector 6 and negative end terminal or current collector 4. A current collector, either positive or negative, is inlaid or molded into a member 2 which can be a housing, a flex circuit, a substrate, or any other supporting walls found in a portable electronic product. The positive current collector 6 is coupled to a positive electrode 16. The positive current collector and positive electrode, in combination, is commonly referred to as the cathode. Likewise, the negative current collector 4 is coupled to a negative electrode 14, and their combination is commonly referred to as the anode. In this embodiment, the negative current collector 4 is inlaid or molded into the member 2, but likewise, if so desired, the positive current collector 6 could be imbedded in member 2. In other words, either the negative or positive current collector is an integral inlaid component of the housing or substrate.

Between the anode and the cathode is a solid electrolyte 8 preferably made from such conductive polymer materials as polyethyleneoxide (PEO), polyphosphazene, polyether-substituted phosphazene (MEEP), or polypropyleneoxide. Coupled between the electrolyte 8 and the positive current collector 6 is a positive electrochemically active material such as a positive electrode 16. Coupled between the electrolyte 8 and the negative current collector 4 is a negative electrochemically active material such as a negative electrode 14. Although FIG. 1 shows only one collector embedded in the member 2, it is within contemplation of the present invention that other portions of the battery 10 (i.e., electrode 14, electrolyte 8, electrode 16, and collector 6) could be embedded within the member 2.

The embodiment of FIG. 1 illustrates one cell, but several cells can be laid in series (as seen in FIG. 4) with as many layers of positive electrode, solid electrolyte, and negative electrode as required for an overall desired battery voltage. Likewise, the inlaid battery, in accordance with the present invention could be configured in a parallel connection to achieve an overall desired battery capacity. A bipolar arrangement with one current collector for one electrode common to two cells could also be configured. The solid electrolyte would provide insulation to separate these connections. Thus, in any of these configurations, the elimination of the outside metallic case of each cell and the elimination of the outer packaging for the overall battery provides a considerable reduction in volume and weight in a portable product. The result is a high energy density, self-powered portable electronic product. Furthermore, since the electrolyte is in a solid state, no contamination or leakage to the portable product componentry will occur.

Referring to FIG. 4, the embedded battery 50 comprises a first cell 10 as described in reference to FIG. 1, electronically coupled to a second cell 20 in series. The second cell 20 comprises, similar to cell 10, a negative current collector 24 coupled to a negative electrode 34 forming a anode, a positive current collector 26 coupled to a positive electrode 36 forming an cathode, and a solid state electrolyte 28 between the cathode and anode. The cell 10 is separated from cell 20 by an insulation means such as the separator 22. The separator 22 typically comprises of polyethylene or other thin nonconductive material. Finally battery 50 comprises of an intercell connection means such as the connector 17, typically made from an electrically conductive metal such as nickel. As previously mentioned, although a series coupling between cells is described, parallel and bipolar coupling arrangements between cells are within contemplation of the present invention.

Referring to FIG. 2 and FIG. 3, the battery 10 is shown embedded in a radio housing 2. The battery 10, as previously described above, comprises a current collector 6 coupled to an electrode 16, another current collector 4 coupled to an electrode 14, and an electrolyte 8 coupled between electrodes 14 and 16. In this embodiment, the positive current collector 6 is coupled to a conductive pad or contact 9 via a conductive runner 7. Likewise, the negative current collector is coupled to a conductive pad or contact 13 via a conductive runner 11. A portion (5) of the conductive runner 11 (shown in dashed lines) is also embedded in the radio housing 2. FIG. 3 illustrates a typical radio 20 that could be used in conjunction with the present invention. Preferably, the radio 20 includes a housing 22, an antenna 24, and contacts 26 and 28 that would couple with the contacts 9 and 13. Of course, other arrangements having the battery 10 on other housing walls or in printed circuit boards or flex circuits within the housing 22 is within contemplation of the present invention.

More , Georgina

Patent Priority Assignee Title
10080291, Sep 01 2009 Sapurast Research LLC Printed circuit board with integrated thin film battery
10199682, Jun 29 2011 Space Charge, LLC Rugged, gel-free, lithium-free, high energy density solid-state electrochemical energy storage devices
10516190, Dec 18 2014 Intel Corporation Surface mount battery and portable electronic device with integrated battery cell
10601074, Jun 29 2011 Space Charge, LLC Rugged, gel-free, lithium-free, high energy density solid-state electrochemical energy storage devices
10658705, Mar 07 2018 Space Charge, LLC Thin-film solid-state energy storage devices
10680277, Jun 07 2010 Sapurast Research LLC Rechargeable, high-density electrochemical device
10707526, Mar 27 2015 NEW DOMINION ENTERPRISES INC All-inorganic solvents for electrolytes
10707531, Sep 27 2016 NEW DOMINION ENTERPRISES INC All-inorganic solvents for electrolytes
11271248, Mar 27 2015 New Dominion Enterprises, Inc. All-inorganic solvents for electrolytes
11527774, Jun 29 2011 Space Charge, LLC Electrochemical energy storage devices
11996517, Jun 29 2011 Space Charge, LLC Electrochemical energy storage devices
12119452, Sep 27 2016 New Dominion Enterprises, Inc. All-inorganic solvents for electrolytes
5307519, Mar 02 1992 Motorola, Inc. Circuit with built-in heat sink
5360686, Aug 20 1993 UNITED STATES OF AMERICA, THE, AS REPRESENTED BY THE ADMINISTRATOR OF THE NATIONAL AERONAUTICS AND SPACE ADMINISTRATION Thin composite solid electrolyte film for lithium batteries
5495250, Nov 01 1993 MOTOROLA SOLUTIONS, INC Battery-powered RF tags and apparatus for manufacturing the same
5558957, Oct 26 1994 International Business Machines Corporation Method for making a thin flexible primary battery for microelectronics applications
5567544, May 26 1995 Boundless Corp. Battery
5581170, Dec 12 1994 Unitrode Corporation Battery protector
5652501, Dec 12 1994 Unitrode Corporation Voltage sensor for detecting cell voltages
5654111, Jun 28 1994 GS YUASA INTERNATIONAL LTD Electronic device having a battery and a battery therefor
5663014, Mar 02 1994 Round Rock Research, LLC Thin profile battery with improved separator and gasket construction
5789104, Mar 02 1994 Round Rock Research, LLC Button-type battery with improved separator and gasket construction
5800865, Mar 02 1994 Round Rock Research, LLC Thin profile battery with improved separator and gasket construction
5800943, Mar 02 1994 Round Rock Research, LLC Thin profile battery with improved separator and gasket construction
5800944, Feb 02 1994 Round Rock Research, LLC Thin profile battery with improved separator and gasket construction
5807644, Mar 02 1994 Round Rock Research, LLC Thin profile battery
5811204, Dec 20 1995 POWER PAPER LTD Flexible thin layer open electrochemical cell
5843596, Dec 01 1994 Round Rock Research, LLC Methods of forming button type batteries and to button type battery insulating and sealing gaskets
5849044, Oct 11 1994 Round Rock Research, LLC Method of forming thin profile batteries
5851244, Dec 01 1994 Round Rock Research, LLC methods of forming thin profile batteries and methods of providing sealing gaskets between battery terminal housing members
5866277, Mar 02 1994 Round Rock Research, LLC Button type battery with improved separator and gasket construction
5919274, Dec 01 1994 Round Rock Research, LLC Method of forming a thin profile battery
5952121, Mar 02 1994 Round Rock Research, LLC Button-type battery with improved separator and gasket construction
6027829, Dec 01 1994 Round Rock Research, LLC Insulative sealing gaskets and a thin profile battery
6061577, Dec 20 1994 Alcatel Electrical power supply circuit, in particular for portable appliances
6064857, Apr 15 1997 Globalstar L.P. Dual mode satellite telephone with hybrid battery/capacitor power supply
6137192, May 15 1998 Energenius, Inc. Embedded backup energy storage unit
6137671, Jan 29 1998 Energenius, Inc. Embedded energy storage device
6404081, May 15 1998 Energenius, Inc. Embedded backup energy storage unit
6906436, Jan 02 2003 Cymbet Corporation Solid state activity-activated battery device and method
6924164, Mar 24 2000 Cymbet Corporation Method of continuous processing of thin-film batteries and like devices
6962613, Mar 24 2000 Cymbet Corporation Low-temperature fabrication of thin-film energy-storage devices
6986199, Jun 11 2003 The United States of America as represented by the Secretary of the Navy Laser-based technique for producing and embedding electrochemical cells and electronic components directly into circuit board materials
6986965, Mar 24 2000 Cymbet Corporation Device enclosures and devices with integrated battery
7131189, Mar 24 2000 Cymbet Corporation Continuous processing of thin-film batteries and like devices
7144655, Mar 24 2000 Cymbet Corporation Thin-film battery having ultra-thin electrolyte
7150938, Mar 30 2001 LITHIUM POWER TECHNOLOGIES, INC Structurally embedded intelligent power unit
7157187, Mar 24 2000 Cymbet Corporation Thin-film battery devices and apparatus for making the same
7194801, Mar 24 2000 Cymbet Corporation Thin-film battery having ultra-thin electrolyte and associated method
7211351, Oct 16 2003 Cymbet Corporation Lithium/air batteries with LiPON as separator and protective barrier and method
7274118, Jan 02 2003 Cymbet Corporation Solid state MEMS activity-activated battery device and method
7294209, Jan 02 2003 Cymbet Corporation Apparatus and method for depositing material onto a substrate using a roll-to-roll mask
7344804, Oct 16 2003 Cymbet Corporation Lithium/air batteries with LiPON as separator and protective barrier and method
7389580, Mar 24 2000 Cymbet Corporation Method and apparatus for thin-film battery having ultra-thin electrolyte
7433655, Mar 24 2000 INTEGRATED POWER SOLUTIONS INC Battery-operated wireless-communication apparatus and method
7465514, Feb 24 2003 KONINKLIJKE PHILIPS ELECTRONICS, N V Electrochemical energy source and electronic device incorporating such an energy source
7494742, Jan 06 2004 Cymbet Corporation Layered barrier structure having one or more definable layers and method
7583506, Oct 14 2005 Boeing Company, the Multi operational system apparatus and method
7603144, Jan 02 2003 Cymbet Corporation Active wireless tagging system on peel and stick substrate
7624499, Feb 26 2004 HEI, Inc. Flexible circuit having an integrally formed battery
7776478, Jul 15 2005 Cymbet Corporation Thin-film batteries with polymer and LiPON electrolyte layers and method
7807279, May 24 2006 Commissariat a l'Energie Atomique Integrated microcomponent combining energy recovery and storage functions
7855017, Nov 09 2005 ARMY, UNITED STATES OF AMERICA AS REPRESENTED BY THE SECRETARY OF THE Structural batteries and components thereof
7877120, Mar 24 2000 Cymbet Corporation Battery-operated wireless-communication apparatus and method
7931989, Jul 15 2005 Cymbet Corporation Thin-film batteries with soft and hard electrolyte layers and method
7939205, Jul 15 2005 Cymbet Corporation Thin-film batteries with polymer and LiPON electrolyte layers and method
7959769, Dec 08 2004 Sapurast Research LLC Deposition of LiCoO2
7993773, Aug 09 2002 Sapurast Research LLC Electrochemical apparatus with barrier layer protected substrate
8021778, Aug 09 2002 Sapurast Research LLC Electrochemical apparatus with barrier layer protected substrate
8044508, Mar 24 2000 Cymbet Corporation Method and apparatus for integrated-circuit battery devices
8057938, Nov 09 2005 ARMY, UNITED STATES OF AMERICA AS REPRESENTED BY THE SECRETARY OF THE Structural fuel cells and components thereof
8062708, Sep 29 2006 Sapurast Research LLC Masking of and material constraint for depositing battery layers on flexible substrates
8197781, Nov 07 2006 Sapurast Research LLC Sputtering target of Li3PO4 and method for producing same
8219140, Mar 24 2000 Cymbet Corporation Battery-operated wireless-communication apparatus and method
8236443, Jun 15 2005 Sapurast Research LLC Metal film encapsulation
8260203, Sep 12 2008 Sapurast Research LLC Energy device with integral conductive surface for data communication via electromagnetic energy and method thereof
8268488, Dec 21 2007 Sapurast Research LLC Thin film electrolyte for thin film batteries
8350519, Apr 02 2008 Sapurast Research LLC Passive over/under voltage control and protection for energy storage devices associated with energy harvesting
8394522, Apr 29 2008 Sapurast Research LLC Robust metal film encapsulation
8404376, Aug 09 2002 Sapurast Research LLC Metal film encapsulation
8431264, Aug 09 2002 Sapurast Research LLC Hybrid thin-film battery
8445130, Nov 17 2005 Sapurast Research LLC Hybrid thin-film battery
8508193, Oct 08 2008 Sapurast Research LLC Environmentally-powered wireless sensor module
8518581, Jan 11 2008 Sapurast Research LLC Thin film encapsulation for thin film batteries and other devices
8535396, Aug 09 2002 Sapurast Research LLC Electrochemical apparatus with barrier layer protected substrate
8576542, Nov 09 2005 The United States of America as represented by the Secretary of the Army Structural electrochemical capacitor
8599572, Sep 01 2009 Sapurast Research LLC Printed circuit board with integrated thin film battery
8636876, Dec 08 2004 DEMARAY, LLC Deposition of LiCoO2
8637349, Mar 24 2000 Cymbet Corporation Method and apparatus for integrated-circuit battery devices
8728285, May 23 2003 DEMARAY, LLC Transparent conductive oxides
8906523, Aug 11 2008 Sapurast Research LLC Energy device with integral collector surface for electromagnetic energy harvesting and method thereof
9190217, Nov 09 2005 The United States of America as represented by the Secretary of the Army Method for forming a structural electrochemical capacitor
9334557, Dec 21 2007 Sapurast Research LLC Method for sputter targets for electrolyte films
9532453, Sep 01 2009 Sapurast Research LLC Printed circuit board with integrated thin film battery
9634296, Aug 09 2002 Sapurast Research LLC Thin film battery on an integrated circuit or circuit board and method thereof
9786873, Jan 11 2008 Allegro MicroSystems, LLC Thin film encapsulation for thin film batteries and other devices
9793523, Aug 09 2002 Sapurast Research LLC Electrochemical apparatus with barrier layer protected substrate
9853325, Jun 29 2011 Space Charge, LLC Rugged, gel-free, lithium-free, high energy density solid-state electrochemical energy storage devices
9865880, Jun 14 2011 BAE SYSTEMS PLC Component including a rechargeable battery
RE39676, Dec 20 1995 POWER FLEX LTD Flexible thin layer open electrochemical cell
Patent Priority Assignee Title
2523354,
4822701, Sep 19 1986 Imperial Chemical Industries PLC Solid electrolytes
5019467, Nov 13 1987 Kimoto & Co., Ltd. Thin primary cell
5019468, Oct 27 1988 Brother Kogyo Kabushiki Kaisha Sheet type storage battery and printed wiring board containing the same
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